M16C80 Datasheet, PDF (139/358 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/80 SERIES

M16C/80 Group
16. Serial I/O
RxDi
RxD data
reverse circuit
No reverse
Reverse
1SP
SP
SP
2SP
PAR
PAR
disabled
Clock
synchronous
type
PAR
enabled
UART
Clock
synchronous type
UART
(7 bits)
UART
(8 bits)
UART(7 bits)
UART
(9 bits)
Clock
synchronous type
UART
(8 bits)
UART
(9 bits)
UARTi receive register
0 0 0 0 0 0 0 D8
D7 D6 D5 D4 D3 D2 D1 D0
UARTi receive
buffer register
Logic reverse circuit + MSB/LSB conversion circuit
Data bus high-order bits
Address 033E16
Address 033F16
Address 032E16
Address 032F16
Address 02FE16
Address 02FF16
Data bus low-order bits
Logic reverse circuit + MSB/LSB conversion circuit
D8
D7 D6 D5 D4 D3 D2 D1 D0
UART2 transmit
buffer register
UART
(8 bits)
UART
(9 bits)
2SP
PAR
enabled _UART
UART
(9 bits)
Clock
synchronous type
SP
SP
PAR
1SP
PAR
disabled
Clock
synchronous
type
“0”
UART
(7 bits)
UART
(8 bits)
Clock
synchronous type
UART(7 bits)
UARTi transmit register
Error signal output
disable
No reverse
Address 033A16
Address 033B16
Address 032A16
Address 032B16
Address 02FA16
Address 02FB16
Error signal
output circuit
Error signal output
enable
TxD data
reverse circuit
Reverse
SP : Stop bit
PAR : Parity bit
i : 2 to 4
TxDi
Figure 16.4 Block diagram of UARTi (i = 2 to 4) transmit/receive unit
Rev.1.00 Aug. 02, 2005 ^{Page 128} of 329
REJ09B0187-0100